How the tragedy unfolded· America's day of terror· How the twin towers were destroyed· How the hijacked planes deviated from their flight paths· Manhattan skyline: before and after the attack· The twin towers: which companies were whereThese guides need Macromedia Flash to work - you can download it here free.

What you can do

How to get involvedNo matter what your views on the events of September 11 and the crisis in Afghanistan, there are some things you can do. Mark Oliver explains how you can volunteer, donate and make your voice heard.

Not againNovember 13: Two months and a day after the apocalyptic attack on the World Trade Centre, New Yorkers were yesterday glued to their TV screens once more, watching plumes of smoke rise from the wreckage of an air crash. Amanda Foreman describes reactions to the city's latest disaster.

Thousands of people died in the devastating terror attacks. Here we publish the names of those known to have perished on the four hijacked airliners, plus unofficial lists of British and Irish nationals unaccounted for.